Zurcher Kantonalbank (Zurich Cantonalbank): AMPX position timeline

Zurcher Kantonalbank (Zurich Cantonalbank) held 43,121 AMPX shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

1. period ended2026-06-30

   13F 43,121 shares

   Change vs previous 13F -7,012 shares

   <0.01% of the 13F portfolio, value $597,657.

   13F-HR 0001368163-26-000004 filed by Zurcher Kantonalbank (Zurich Cantonalbank)
   Filed 2026-08-12 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC

   Acceptance time not in the bulk data set (spec §4.2).

2. period ended2026-03-31

   13F 50,133 shares

   Change vs previous 13F +7,646 shares

   <0.01% of the 13F portfolio, value $845,242.

   13F-HR 0001368163-26-000002 filed by Zurcher Kantonalbank (Zurich Cantonalbank)
   Filed 2026-05-15 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC

   Acceptance time not in the bulk data set (spec §4.2).

3. period ended2025-12-31

   13F 42,487 shares

   Change vs previous 13F +17,807 shares

   <0.01% of the 13F portfolio, value $335,222.

   13F-HR 0000947871-26-000067 filed by Zurcher Kantonalbank (Zurich Cantonalbank)
   Filed 2026-01-27 (acceptance time not in the bulk data set), ingested 2026-10-07 03:01:36 UTC

   Acceptance time not in the bulk data set (spec §4.2).

4. period ended2025-09-30

   13F 24,680 shares

   Change vs previous 13F not available

   <0.01% of the 13F portfolio, value $259,634.

   13F-HR 0000947871-25-001007 filed by Zurcher Kantonalbank (Zurich Cantonalbank)
   Filed 2025-11-14 (acceptance time not in the bulk data set), ingested 2026-10-07 03:02:25 UTC

   Acceptance time not in the bulk data set (spec §4.2).